It rained like crazy here yesterday and, believe it or not, this was the first time I have ever driven this car in the rain since I owned her, (March '07) Anyhow, here's what she's doing, when I stop at a red light\stop sign, so do my wipers! Then when I begin to drive again, it appears that my wipers adjust to my speed. The faster I go, the faster the wipers go! The slower I go, the slower the wipers go!! Is this normal, or do I have a malfunction? I know some cars have speed sensitive wipers, but I didn't know the Mercedes did, especially in this old of a car. Any ideas? Thanks!!!